#5 Efectivamente, #3 tiene razón. De la noticia meneada: "The two new worlds orbit a sunlike star 950 light-years away called Kepler 20. One has dimensions almost identical to our own planet; the other is just 87 percent Earth's diameter. The planets, which by convention have been assigned the names Kepler 20 f and Kepler 20 e, respectively [...]"
Nada que ver pues con el llamado 22b de #2